Improvement in journal-bearings



J SWEENEY.

Journal, Bearing. No. 199,669. Patented Jan, 29, 187-8.

ATTORNEYS;

Pal

UNITED STATES PATENT QFFIGE.

JOHN SWEENEY, OF. NEW HAVEN, CONNECTICUT.

IMPROVEMENT lN JOURNAL-BEARINGS.

Specification forming part of Letters Patent No. 199,669, dated January29, 1878; application filed June 25, 1877.

To all whom it may concern:

Be it known that I, JOHN SWEENEY, of the city and county of New Haven,and State of Connecticut, have invented a new and Improved Journal-Bearing', of which the following is a specification:

This invention relates to bearings intended. specially for the journalsof car-axles, though adapted also to other purposes, and is animprovement on the patent of Brower, granted June 9, 1863, N 0. 38,808.

The object of said invention is to make the attachment of the centralrib of hard metal independent of the anti-friction inner metal, so thatthe melting of the latter cannot subject said rib to danger ofdislodgment also, to avoid all necessity for weakening the brass casingof the bearing by perforations. This object is accomplished bydovetailing the central strip of hard metal into the outer casing andomitting all perforations or recesses in either of these parts, theconstruction, combination, and arrangement of the three metals formingmy bearing being as hereinafter more fully set forth.

In the annexed drawings, Figure 1 is across section through the cap of aoar-axle box,

illustrating one application of my invention.

Fig. 2 is a bottom view of the same without the soft-metal lining. Fig.3 is a perspective view of the rib.

Similar letters of reference indicate corresponding parts.

The letter A designates the body or shellof the hearing, which, in thisinstance, is the cap of a journal-box for a car-axle. This shell may bemade of cheap brass, of cast-iron, or of any other metal.

B designates a rib, which should be made of the best wearing metal oralloy of metals.

For instance, an alloy made of copper and tin in suitable proportionsmay be used. This rib is a narrow strip of metal, having fiat sides anddovetail tenons e e on its ends, as shown in the drawing, and it is madeseparate from the shell A, and adjusted in the sand-mold, so

The filling or lining C should cover the flat face of the rib B, asshown at c in Fig. 1, so that in commencing to use the bearing thejournal will run in soft metal alone. i As the soft metal wears and thejournal finds a seat in the box, the flat face of the rib B will beexposed and the journal will find a bearing against it. The parts willthen be perfectly true, and the journal will run true without heating.

In practice I may use more than one bearing-rib, B, and I may cast therib or ribs and the shell separate, and secure them together by bolts orin any other suitable manner. I

prefer, however, to cast the shell on the rib, as described.

It will be observed that when the journal first impinges against thefiat surface of the rib B a very small amount of wearing-surface will bepresented. After a time, as the rib wears, this surface will begradually increased.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- The combination of an imperforated outercasing of cheap metal with a longitudinal central rib of hard metal,dovetailed into the in side of said casing, and an inner facing ofanti-friction metal secured by flanges on the inside of said casing, theattachment of said central rib to the shell being entirely independentof the anti-friction facing, substantially as set forth.

JOHN SWEENEY.

Witnesses G. SnnewIoK, ALEX. F. RoBEnTs-

